Waldorf Blofeld 49-Keyboard w/ Flight Case

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via this Reverb listing

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1977 Korg M-500 Micro-Preset Synthesizer SN 810139 w/ Cards & Manual

Note: links to listings are affiliate links for which the site may be compensated.

via this eBay listing

"This is vintage 1977 synthesizer by Korg. With manual and cards (15). The button for Synth 2 does not work. Or at least I don’t know how to use it. It turns on and synth 1 works. One little button on the slide pad is missing the top piece and the wire upright music rack is gone."

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Bad Gear - NO ONE understands this! & It's UGLY

video upload by AudioPilz

"Today, however, we are going to talk about K2000. This range of Synth/ROMpler/Sampler hybrids was originally brought to the market in 1991 by Ray Kurzweil, a completely overpowered mega brain who went from being Stevie Wonder ’s custom shop to looking forward to merging with AI by 2045. No one understands this.


Chapters:
00:00 Intro tune
01:04 Overview Kurzweil K-2000
01:19 Different Models, Sampling
01:41 What the Actual...?!? (The Samples)
02:17 Keygroups
02:31 Layers, Algorithms, Synth Architecture
02:59 Sync, FM, Complex Signal Chains
03:13 Filters
03:23 Modulators, FUN, Midi Control
03:48 Problems with the Aging Hardware
03:56 Programs, Presets (No, we're still not finished)
04:31 FX Section
04:48 Patches
05:08 What else? (Outputs, Sequencer, Thanks, Pricing)
05:48 H*te Screen
06:12 Jam 1 ( Techno Preset Surfing )
07:13 Jam 2 ( Tracker Drum'n'Bass )
08:13 Finale ( 90s Adventure Game OST )
08:46 VERDICT"

Bad Gear - It's UGLY!!!

video upload by AudioPilz

Chapters:
00:00 Intro tune
00:26 Overview Akai MPC Live III
00:37 The new fancy Pads
01:17 The Catch, Articulations
01:38 Built-in Mic, Speakers
01:45 Step Sequencer
02:22 Tech Specs
02:34 Arrangement, Clip Matrix
03:01 Ribbon Controller, Q-Link Knobs, Touch Screen
03:37 Instruments (Drums, Keygroups, Plugins,...)
04:11 More DAW-like Stuff, Time Stretch, Mixer
04:43 Pro Pack, Compatibility to other MPCs, Stems
05:07 What else? (Content, Hardware, Pricing, Thanks)
06:12 H*te Screen
06:40 Jam 1 ( EDM )
07:36 Jam 2 (Epic Lo-fi Type Beat )
08:42 Finale ( 90s FPS Style DnB )
09:14 VERDICT

And the Halloween episode:

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Play+ / Dirt Synth Functionality and Sound Design

video upload by Polyend

"Let's get into how you make some patches with Dirt.

Dirt is the latest Synth engine for the Polyend Play+ available on Firmware 1.3 - https://polyend.com/downloads/play-pl..."

MOOG Messenger Sequencer, Arppegiator, & Spectravox Feedback

video uploads by Moog Music

Playlist:

1. Messenger | Sequencer Functionality

Messenger features a deep generative sequencer with functionality inspired by Muse. With features like Note Pool paired with Note Probability, Gate probability, and the ability to store a unique sequence per-patch, Messenger’s sequencer provides an intuitive way to build up complex melodic sequences that can spin off into new permutations at the touch of a button.

2. Messenger | Arppegiator Functionality

Messenger features an extremely flexible arpeggiator with functionality inspired by the arp found in Muse. With the ability to chose both traditional or newer advanced note movement patterns, program rhythms, and the option to store a unique arp style per-patch, Messenger’s arpeggiator is a powerful tool for music composition and developing new song ideas.

3. Messenger | Spectravox Feedback

In this video we look at how to use Spectravox and Messenger together to create feedback tones verging on the edge of destruction.

Spectravox is a flexible signal processor which adds lots of sonic character to any signal we patch into it. Using a basic sound from Messenger we can add distortion and saturation using Spectravox's pre-amp section as well as deep modulated phaser tones with its ten filters. Messenger's control voltage output allows us to control parameters of Spectravox (in this case the Spectral Shift LFO rate) using Messenger's keyboard. Later, we look at tying Spectravox and Messenger together in a feedback loop - patching the headphone output of Messenger to the Program input of Spectravox, the Program output of Spectravox to its Carrier Input, and then the output of Spectravox to the External Input of Messenger. With careful balance of the EXT IN/FB control and various parameters on both Spectravox and Messenger, a whole new world of gnarly and nonlinear feedback tones opens up.

How to Mutate | KeyStep mk2

video upload by Arturia

"Join Matt Paull for a focused look at KeyStep Mk2’s Mutate feature - a creative tool for transforming sequences and arpeggios into evolving musical ideas. Learn how to shape variations, lock everything to scale, record automation, and push your patterns into new directions for fast, inspired compositions.

_CHAPTERS
00:00 Intro
00:26 Mutating the sequence
01:51 Recording automation
02:16 Scale Mode
02:50 Mutating the arpeggiator
03:41 Turning an arp into a sequence
03:58 Extra Tips
04:41 Chaining patterns"

Turismo - Environment Sound Design

video upload by ALM TV

"Our Eurorack modular workstation the 'Turismo' is well suited for sequencing beats and groove box style patching but the versatile system can fit equally well into less structured environments. In this patch we explored using the Turismo for realistic environmental sound design, making use of it's plethora of utilites and interesting sound shaping capabilities to create a custom environment with realistic rain and thunder sounds entirely synthesized by the system.

For a more detailed description of this patch, please see our full writeup on the Busy Circuits blog: https://busycircuits.com/blogs/latest..."

Antonus Step Brother with Elektor Formant by Erica Synths improvisation

video upload by Antonus

"Testing the finished Elektor Formant DIY KIT from Erica Synths.
Improvising using the Antonus Step Brother for play the Formant. Very special and particular sound and behaviour in the Formant, but the Step Brother connects in a very powerful way. I love how also they match in dimensions, Step Brother fits perfect on bottom of the Formant. Very fun and powerful combo!"

Elmyra 2 firmware v2.4 – new features walkthrough

video upload by nyppy

"Get the update file here: https://neutral-labs.com/elmyra2

00:00 Intro
00:13 Improved sound quality
00:30 New delay
00:58 New and controllable reverb
01:43 Comb filter
02:18 Action confirmation
02:23 New multimode ladder filter
02:45 Oscillator hard sync
03:16 Voice stacking/tune follow
03:50 Diatonic and pentatonic scales
04:01 Quick octave switching
04:15 Knob motion recording
04:40 Super short envelopes
04:59 Quick mute
05:21 Outro jam"

The Queen of Industrial Grunge Got an Upgrade — Sophisticated Dirt!

video upload by Cinematic Laboratory

"#Elmyra2 v2.4 — What’s New and Improved Sound Engine

Higher sample rate and improved wavetable resolution → noticeably cleaner top end. New wavetables added. Overall mix saturation refined, with “soft” (122) now default. Knob value stability and tuning precision improved.

Filters
New comb filter (codes 3321/3322). RESO = damping, CUTOFF = delay time, with optional pitch tracking. Ladder filter reworked — now true multimode (LP/BP/HP) with higher quality. Ladder LP (331) is the new default filter. State-variable filter retains LP/BP/HP modes (341–343) but with improved gain staging, resonance, and cutoff ranges.

Delay & Reverb
Delay fully re-implemented → cleaner feedback, no lock-ups.
Added proper reverb engine controllable with delay knobs.
Code 441 = delay (default), 442 = new reverb, 4411 = legacy lo-fi reverb.
TIME = decay, FDBK = color, MIX = blend.
Dry/wet crossfade curve improved for smoother transitions.

Modulation
New MODP: oscillator hard-sync (orange LED, position 5).
MOD controls the synced oscillator pitch.
LFO1 knob-motion recording (code 2413) — record live movement of LFO rate. Sequencer output to LFO1 possible (243v).
Per-voice sequencer clock divider (11sv).
Digitally controlled envelopes in multiple short modes (221v → very short … 224v → disable). Detune MODP range expanded.

Scales & Chromatic Mode
New musical scales for chromatic mode: major, minor, major pentatonic, minor pentatonic (CHRM + 11–14). Scale selection now unified under the CHRM button. Knob-to-pitch mapping in chromatic mode is now linear and exact.

User Interface & Workflow

LED feedback overhaul — REC and PLAY flash to confirm code entry, sequence record, mute, and drone states. Quick mute/unmute voice (MODP + PG long press). Quick octave switch (MODP + double-tap PG).
Pink MODP LED at startup identifies firmware 2.4.
Touchpad LEDs more reliable during operation.
Drone and mute response feels snappier.

Under-the-hood Fixes
State-variable filter crash fixed (previously triggered by fast cutoff modulation).
Improved detune, filter, and delay behaviors under modulation load.
Sequencer timing more consistent with internal clock."

ODD-1 Overview 05: LFOs, Macros, Patching

video upload by Oddment

"This is the fifth in a series of videos to show all of the ODD-1's functions in more detail. In this one we show off the LFOs, Macros and how to create modulation connections. There are 4 LFOs, 3 Envelopes, 4 Macros (assignable knobs), 4 Control inputs and MIDI information that can all act as modulation sources. Any parameter on the device is a parameter destination. Unlimited connections are made by holding down a destination parameter and then pressing or twisting a modulation source."

All parts here